There is no purpose for the population to own fully automatic weapons. They should be banned. In addition, the kits to convert semi's into fully automatic should also be banned. Manufacturers should produce semi's that cannot be converted as well.
This in no way infringes on a persons right to own a weapon, so the gun fanatics just need to chill out and be happy that they have their toys to begin with.
(Now if my best friend read this, I'm sure he'd lock me up in his gun safe and leave me there until I changed my mind. hahaha)